Feline Infectious PeritonitisCoronavirus, FelinePeritonitisCoronaviridaeCoronaviridae InfectionsCatsCat DiseasesCoronavirus, CanineTransmissible gastroenteritis virusAntibody-Dependent EnhancementCoronavirusSpike Glycoprotein, CoronavirusCoronavirus 229E, HumanAntigens, CD13Coronavirus InfectionsPeritonitis, TuberculousSpecific Pathogen-Free OrganismsPeritoneal Dialysis, Continuous AmbulatoryPeritoneal DialysisViral Envelope ProteinsAntigens, ViralAntibodies, ViralVirulenceMolecular Sequence DataPeritoneumCatheters, IndwellingRNA, ViralVirus ReplicationAscitic FluidCell LineViral Proteins